Abstract: A hydraulically actuated fast action gate valve for gating highly viscous uids in a salt water environment includes front and back plates having openings for connection to conduits containing the viscous fluid and a center plate having a slot for receiving a slidable gate that includes an optional check valve. A gate is positioned within the slot and includes upper and lower grooves that provide rapid equalization of pressure of the viscous fluid between the opposite ends of the gate when the gate is rapidly actuated. One end of the gate is connected by a locking pin to an actuating rod that is driven by a hydraulic cylinder that is mounted external to the valve. The front and back plates have opposing passages allowing the actuating rod to be secured to the gate so that the hydraulic cylinder may be removed. An optional opening is provided in the back plate to permit the introduction of a non-gated fluid into piping contained within the inlet conduit.

Abstract: Soluble abrasive cleaning powder fed from a fluid-tight chamber and entrained in a stream of air is directed against a tooth surface to be cleaned from a manually controlled handpiece. The handpiece includes an improved air supply and control system having a first conduit for supplying air under pressure to the handpiece, a second conduit connected to the first for supplying air under pressure into the bottom portion of the fluid-tight chamber for entraining cleaning powder to be discharged through an outlet opening in the fluid-tight chamber and a third conduit connected to the first and to the fluid-tight chamber for directing a flow of air into the chamber at a point above the level of the cleaning powder in the chamber. A flow restricter and air filter are connected in the third conduit with the air filter being located in the fluid-tight chamber for filtering air flowing into and out of the system through the third conduit.

Abstract: A sampling probe by means of which a sample of fluid free of particles or substantially reduced in particle content can be removed from a particulate matter-containing fluid stream which is flowing in a conduit. This is accomplished by means of probe geometry. Openings for entry of the sample into the probe face downstream. In one embodiment, the cross-section of a probe at the fluid entry area is V-shaped.

Abstract: An air flow control valve means for controlling air bleed of internal combustion engine. The air flow control valve means includes a valve housing, an air cleaner means attached to the valve housing, and a valve element adapted for opening and closing the air passage communicated with the air bleed passage. The valve housing is provided with tubular portions projected to the upstream side as viewed in the direction of flow of air introduced into the valve housing. The tubular portion has therein a bypass air passage which open at the end portion of the tubular portion. According to this arrangement, it is possible to avoid any foreign matters from coming into the bypass passage.

Abstract: An integral air inlet which in use admits filtered gases into a fluid container, especially infusion fluid containers, comprises a needle sealed to a housing which is closed by an air filter, the housing having disposed within it a duck bill valve which permits gas to flow from the outside and into the fluid container. The presence of the duck bill valve prevents fluid contacting the air filter thereby reducing the risk of bacterial contamination the fluid when gas is admitted.

Abstract: This invention relates to a propane type gas burner that can be operated safely in an inverted position for an extended period of time and that has a reservoir of a glycol water type mixture to supply heat to vaporize liquified gas as it flows to the torch for burning.

Abstract: Fluid control apparatus including inlet and outlet check valve assemblies connected to a mounting block, filter means operatively associated with the check valve assemblies and a pulse damper device positioned on the mounting block for maintaining a continuous pressure on fluid after it has passed through the check valve assemblies.

Abstract: A stall cock and pulsator for a milker. The stall cock is mounted on the pulsation vacuum line and has an electrical terminal connected with a source of pulsation control signals. The pulsator has a vacuum inlet for connection with the vacuum outlet of the stall cock and an electrical terminal for connecting the pulsation signal from a stall cock terminal to the pulsator valve. The stall cock vacuum outlet and pulsator vacuum inlet are square in cross section and when mated align the pulsation signal terminals on the stall cock and pulsator for interconnection. The stall cock has a cable connector with conductors in the stall cock body that have ends projecting from the connector to pierce the insulating covering of the conductors of the pulsation signal cable. A clamp holds the cable in the cable connector. The ends of the conductors in the stall cock body are laterally spaced from the stall cock vacuum outlet and generally parallel with the pipeline.

Abstract: A valved vent for a liquid drainage system comprising, a receptacle having a chamber to receive liquid, and a filter pervious to air and substantially impervious to the passage of bacteria, with the filter communicating with the atmosphere. The vent has a valve communicating between an upper portion of the chamber and the filter. The valve may be selectively opened to permit passage of air between the atmosphere and the chamber through the filter, and may be selectively closed to prevent passage of liquid from the chamber against the filter.

Abstract: A device for removing foreign particles from a source of fluid under pressure which is adaptable to be connected to a faucet or the like. It comprises one or more screens which are provided to collect the foreign particles which might include small stones, calcium deposits and the like, such that the particles cannot pass through the mesh of the screen. Such screens are mounted on a rotatable member having an exteriorly accessible handle whereby the rotatable member and screens thereon can be rotated at least ninety degrees and preferably one hundred eightly degrees so that the force of the fluid under pressure cleans off the screen and enables it to be used again to collect or intercept other additional foreign particles.

Abstract: Disclosed is a filter for use in a faucet of the type having a removable cartridge member receivable in an underbody member, the cartridge member carrying a cam member, at least one cam follower member and a valve member actuated by the cam follower member upon movement of the cam to control fluid communication between a spout and a source of water. The filter member is removably attached to a projection on the valve member and moves with it within a passage in the underbody member through which water flows from the source. By this means, large particles are prevented by the filter from entering the faucet. The filter comprises an inner annular member, an outer annular ring member, and a plurality of flat web connecting members extending radially between the inner and outer annular members. The inner annular member has a through hole which tapers from a first diameter to a second diameter so that the inner annular member can be forced over a head portion on the projection whereafter it is latched thereon.

Abstract: A water sensitive probe valve shuts off upon detecting water to protect a gas leak detector. A barrel and a cap of the probe valve secure together through a coupling ring and house a normally open valve that is spring biased toward a closed position against a seat of the cap. A water soluble band stretched between a hook on the valve and an anchor holds the valve open. The presence of water dissolves the band and frees the valve to close under the bias of the spring against the seat and prevent water from entering and damaging the gas indicator. A lock keeps the valve open during arming with the water soluble band. The anchor valve and lock all mount on the coupling for ease of disassembly for cleaning and arming. A gas duct on the coupling extends out from the body of the coupling to avoid water entering the duct by runoff across a face of the coupling.

Abstract: An adaptor assembly for connecting a tubing with either a male or female fitting is disclosed. Flow control means within the adaptor assembly comprise an important feature of the disclosed and preferred embodiment wherein the flow control means comprises a filter. The filter is a disk of filtrant material such as a nonwoven fiber formed into a pad of specified thickness and cut in a circle. It is placed adjacent to a shoulder in the adaptor and is supported by a surrounding ring.An alternate embodiment which is one of the preferred embodiments hereof includes a check valve serving as the flow control means. The check valve is constructed with a circular valve seat having a chamfered shoulder, a spherical valve element which closes against the seat to block flow, a surrounding sleeve which permits the check valve element to move toward and away from the chamfered seat and a transversely extending disk to block the passage. The disk blocks the valve element from escape.

Abstract: There is disclosed a gas valve for use in gas-fired appliances such as space and water heaters in which the gas inlet port of the valve housing has a permanently installed protective screen. The protective screen shields against debris and other foreign material which, in its absence, can be discharged into the interior chamber of the valve housing and, additionally, serves as a deterrent to insertion of tools and levers into the valve inlet port by workmen and owners during installation and servicing of the valve. If such insertion occurs with a valve having the permanently installed protective screen of the invention, the screen will be ruptured and there will be a permanent indication that the valve seat or valve member may be damaged by the tool.

Abstract: A relief valve, particularly adapted for use on racing car tires, which pops open to relieve at a set pressure and then reseats at a pressure slightly lower than the opening pressure. The valve includes a diaphragm (28) a diaphragm retaining plate (36) which has a resilient sealing element (39) molded or otherwise attached to it, a valve seat attached to the center of the diaphragm, and a compression spring (26) acting on the diaphragm to bias the valve seat against the resilient sealing element. When the valve pops open against the spring force, the area above the diaphragm is exposed to a venting pressure, via a port formed through the valve seat and through the diaphragm, which is higher than atmospheric and thus adds to the spring force, resulting in a resealing pressure which is slightly less than the opening pressure.

Abstract: An improved self-actuated constant flow rate regulator system is described which can keep the rate of flow of fluid through a filter or other variable load constant within close limits. One application for this invention is for sampling the air for toxic dusts in factories where it is desirable to draw air through a collecting filter at a preset rate regardless of the amount of deposit on the filter and where a number of such filters may be connected to a central vacuum pump. The system comprises a differential pressure regulator and an adjustable metering orifice working in conjunction with each other. The regulator senses the pressure drop across the orifice and governs the flow rate accordingly. Details of the regulator valve and of the metering orifice are set forth which contribute to improved operating performance and manufacturing efficiency.

Abstract: A temperature responsive valve device including a body having first, second and third ports, a first passage member disposed between the first and second ports, a second passage member disposed between the second and third ports, a member defining an orifice arranged within the first passage member for delaying transmission of fluid therethrough, a first filter member arranged between the orifice member and the first port and within the first passage member, a second filter member arranged within the first and second passage members and between the orifice member and the second port as well as between the second and third ports, a passage defining member having an annular portion which contacts with the second filter member to thereby allow fluid communication between an inner portion of the annular portion with the first port and communication of an outer portion of the annular portion with the third port only through means of the second filter member, and a temperature responsive valve member for interrupti

Abstract: A constant-flow fluid regulating valve includes a valve casing having inlet and outlet ports at opposed ends thereof. A spring is mounted coaxially within the casing between the inlet and outlet ports and interiorly of a slide member that is slidable axially within the valve casing. The spring is adapted to bias the slide member towards the inlet port. An orifice plate having a plurality of apertures is carried by the slide member for movement therewith within the valve casing. A guide member is fixedly and coaxially mounted within the valve casing downstream of the slide member. Circumferential surfaces on the guide member and slide member define together an intermediate flow passage through which the fluid passing through the valve must travel before exiting by means of the outlet port.

Abstract: A deaerating valve for bagging fluidized pulverulent products into sacks of the open-mouth type. The valve includes a filtering sheet housed on the inside of the sack to be filled, this sheet having a texture and a thickness such that it multiplies the suction effect through the valve and plays the role of a "wick" to drain the air into a large space. The dimensions of the sheet are considerable with respect to those of the deaerating valve; its surface area may attain that of the flat spread-out sack. The invention is useful in the removal of air from impermeable bags designed to receive a micromized pulverulent product.

Abstract: A gas valve device includes an integral drip leg and filter, positioned upstream from valve means contained therein, for collecting and removing liquid and solid impurities from a gas stream. The drip leg and filter includes a fine-mesh screen of significantly larger cross-sectional area than an inlet opening through which the gas stream enters the gas valve device. The screen is positioned at an angle to cause solid particles to be deflected away from the screen. Clean-out means is located between the inlet opening and the screen for collecting and removing the accumulated liquid and solid impurities. In a preferred embodiment, a detachable cover can be removed to enable cleaning or replacing the screen.

Abstract: A fluid valve for a beverage-making appliance such as a coffee brewer, for example, which valve comprises a housing which contains a valve actuating means and which is closed at its inlet end by a filter, the filter being dome-shaped and having a small central aperture whereby air bubbles in a fluid within the valve may escape upwardly and out so that the valve may be used in appliances subject to microwave radiation.

Abstract: A filter element is provided at the inlet of a spigot for dispensing beverages from a reservoir or cooler. The filter mechanism preferably includes an open, cup-shaped member which is desirably threaded to the inlet shaft of the spigot to act as a fastener for mounting the spigot to the reservoir. The filter element is quickly insertable into and removable from the filter receiving member by a push fit. The preferred filter element includes two apertured end walls, filter paper positioned immediately adjacent the inner faces of each of the apertured end plates, and activated charcoal between the filter paper.

Abstract: A constant-flow fluid regulating valve includes a valve casing having inlet and outlet ports at opposed ends thereof. A spring is mounted coaxially within the casing between the inlet and outlet ports and interiorly of a slide member that is slidable axially within the valve casing. The spring is adapted to bias the slide member towards the inlet port. An orifice plate having a plurality of apertures is carried by the slide member for movement therewith within the valve casing. A guide member is fixedly and coaxially mounted within the valve casing downstream of the slide member. Circumferential surfaces on the guide member and slide member define together an intermediate flow passage through which the fluid passing through the valve must travel before exiting by means of the outlet port.

Abstract: An improved water faucet having a valve body with control elements formed by two discs wherein the first disc is stationary and has water inlet openings and an outlet opening, connected on one side to a valve manifold. The other side is directed toward the second disc, which is movably arranged on the first disc. The second disc has a surface cavity overlapping the inlet openings and outlet opening of the first disc. A noise reducing assembly including a plurality of overlapping screens is disposed within the surface cavity of the second disc. The assembly includes a plurality of overlapping screens with at least one protrusion extending from the screens into the flow passageway between the inlet and outlet openings while maintaining a free minimum passageway to thereby reduce the noise level during operation of the water faucet.

Abstract: An improved check valve is disclosed for use in a system for sequentially delivering primary and secondary solutions through a common conduit. The check valve comprises a hollow housing with an inlet and an outlet connected to an enlarged intermediate portion. Sealed at its periphery in the enlarged portion is a flexible diaphragm characterized by having foraminous means in at least its outer portion and imperforate means in its central portion. The imperforate means is spaced from a valve seat surrounding the passage at the inner end of the inlet so that when the primary solution flows from the inlet to the outlet, it will pass freely around the imperforate means and through the foraminous means. When an increase in pressure, even though slight, is exerted against the diaphragm caused by flow of the secondary solution in the direction of the outlet to the inlet, the diaphragm moves towards the inlet causing the imperforate means to seal against the valve seat and stop the flow of the primary solution.

Abstract: The casing for a filter comprises at least two body portions defining a chamber for the filter means. The body portions are relatively movable between a closed position in which fluid cannot escape between them, and an open position in which fluid can escape between them. An increase in pressure in the chamber tends to urge the body portions to their open position, but there is resilient means which resists that and only permits the portions to part when the pressure in the chamber reaches a predetermined value.

Abstract: A pressure regulator for a gas lighter which comprises, in a well of the lighter body, a porous membrane of constant natural porosity separating two chambers from one another to set the maximum flame height. A downstream chamber is connected to the burner outlet and serves for evaporation while upstream of the filter the wetting chamber communicates with the reservoir containing the fuel.

Abstract: A gas lighter has a hollow cylindrical reservoir formed at one end with a smooth cylindrical well at the bottom of which is formed a hole opening into the interior of the reservoir. A rigid plug is force-fitted into the well and has a pair of sides and a passage extending between the sides. One side compresses a block of porous and compressible material which serves to control the flow of gas out of the hole, and the other side of the plug serves as the seat for a valve body reciprocal in the well. The floor of the well and/or the one side of the plug may be formed with a recess so that the plug may bottom in the well with the block in the recess, thereby compressing this block to an exactly predetermined extent so that gas flow and, hence, flame height is determined exactly.

Abstract: A pressure stabilizer for use in hydrocarbon storage facilities which acts as an orifice and also permits the pressure in the system to be stabilized when it reaches a given amount. The stabilizer has a casing with a valve seat and a heavy ball located above the valve seat so that the ball is forcibly displaced upwards when the pressure in the hydrocarbon storage facility reaches an amount sufficient to lift the weight of the ball. Support members extending from the side of the valve seat suspend the ball away from the valve seat a sufficient distance to form the appropriate sized orifice and to minimize contact of the ball to the casing so that the possibility of the stabilizer being frozen closed is minimized.

Abstract: A fluid impervious housing having an upper cavity for a water meter and a lower cavity for pressure regulating apparatus. A removable partition separates the cavities and removal of the partition provides access to both cavities for maintenance. The pressure regulator includes a reciprocable valve and the partition has a guide for such valve so that when the partition is removed the valve is accessible. The lower cavity is arranged to accommodate a valve structure employing Bellofram seals. A back pass check valve for affording reverse flow should the output pressure exceed the input pressure. A pressure relief valve for releasing water to the exterior of the apparatus should pressure downstream of the apparatus reach an excessive level. A screen for preventing entry of solid particulates into the relatively delicate meter mechanism in the upper chamber.

Abstract: A dental office system including apparatus particularly adapted to high speed dental equipment. An aspirator operating valve having a coil spring trap catches inlays and crowns and other large pieces while permitting amalgum and other small pieces to pass without clogging the trap. A vacuum/venturi line avoids sludge buildup by constantly moving air through the lines. A water separator using a baffle arrangement avoids water creeping up the separator walls to reach and damage the vacuum pump. A slidable instrument console panel for ease of use by a dentist or his assistant includes automatic switches that operate when a dental handpiece is lifted.

Abstract: A needle valve for use in the idle port of a carburetor, said needle valve having a cap retained foam filter covering an otherwise unobstructed passage extending axially compltely through the needle valve to permit moving air at atmospheric pressure, 14.7 pounds per square inch and at a speed of about 400 feet per second more or less passing through said passage to drive fuel passing through the idle port into the throat of said carburetor away from the walls of the throat, the needle valve being threaded into the carburetor housing and retained by a nut and lock washer.

Abstract: This invention relates to an exhaust valve to remove air under pressure from the sand magazine of a core or molding machine apparatus which reduces the noise of the exhaust and which includes a housing member for a reciprocable piston that controls an exhaust port of substantial size in such housing and a screen housing projecting through the wall of the sand magazine with a screen mounted in the screen housing to filter incoming air through a relatively large inlet port.

Abstract: A sewer pipe valve section comprising a removable one-way check valve and a separate removable screen is provided to be interposed between the building sewer drain system and that of the city. A linkage retains the screen in a normally raised inoperative position when the one-way check valve is in a lowered operative position and permits the screen to be lowered into operative position when the check valve is raised and removed for cleaning the pipe.